Kidney Stone Into Bladder. Stones that form in your kidneys are not the same as bladder stones. Small stones can easily move through the urethra even though being narrow during urination and often go unnoticed.
If it becomes lodged in the ureters it may block the flow of urine and cause the kidney to swell and the ureter to spasm which can be very painful. This is different from the pain that occurs as the stone moves from the kidneys through the ureter to the bladder. Pain is usually experienced around the lower abdominal area just below the belly button.
The trouble is the average human ureter is roughly 3 4mm in exterior diameter interior diameter is about 2 3mm and about 10 12 inches long.
Stones that form in your kidneys are not the same as bladder stones. That pain known as renal colic is typically very sharp comes in waves and is felt in the area between the rib cage and the hip. If it becomes lodged in the ureters it may block the flow of urine and cause the kidney to swell and the ureter to spasm which can be very painful. They develop in different ways.